Variant Beaufort Cipher
German Beaufort variant using Vigenere-style shifts in reverse.
The Variant Beaufort cipher, also known as German Beaufort, is a polyalphabetic substitution cipher similar to the Vigenere cipher. Its key difference is that encryption is performed like Vigenere decryption, and decryption is performed like Vigenere encryption. This tool supports both standard and autokey Variant Beaufort modes. Don't know the keyword? Use Solve automatically to crack it from ciphertext.
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Keyword case doesn't matter (CACHE = cache). The letter case of your text is preserved in the output.
Enter a keyword to derive a custom alphabet, or leave blank for A-Z.
Sets the language statistics the solver scores against. Choose Auto to detect the plaintext language from the ciphertext and switch to it automatically (needs at least ~20 letters). Raise the max keyword length for longer keys, but note that longer keys need more ciphertext to crack reliably.
Auto-solve assumes the standard A-Z alphabet; results won't match if you've set a custom alphabet.
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Tabula Recta
The cipher uses this table for encipherment. Updates when alphabet changes.